...
WPP is a parallel computer program for simulating time-dependent elastic and viscoelastic wave propagation, with some provisions for acoustic wave propagation. WPP solves the governing equations in displacement formulation using a node-based finite difference approach on a Cartesian grid. WPP implements substantial capabilities for 3-D seismic modeling,
Mathematica and gridMathematica
Mathematica, advertised as a one stop for technical work that integrates a numeric and symbolic computational engine, graphics system, programming language, documentation and advanced connectivity to other applications. Not only does this application have parallel functionality built into it from the ground up. The Wolfram Mathematica web site has extensive documentation, including numerous detailed tutorials.
...